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Official data from INPI

SISTEMA, E PROCESSO, PARA MEDIR A TAXA NA QUAL MATERIAL PULVERIZADO FLUI DE UMRECIPIENTE.

PublicadaInvention Patent

Application data

Number

PI8705939

Type

Invention Patent

Filing

11/04/1987

Publication

06/14/1988

Progress at the INPI

  1. Filing11/04/87
  2. Publication06/14/88
  3. Examination09/25/90
  4. Allowance12/08/92
  5. Grant06/29/93
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sulzer Metco (US) Inc.

US

T. C. (pessoa física)

US

See this company's full portfolio

Inventors

C. M. (pessoa física)

US

E. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

927.012 · 11/04/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

06/14/1988

RPI 921

Pedido de patente depositado

#2.1

02/23/1988

RPI 905

Carta-patente expirada

#21.1

Patente extinta em 04/11/2002

07/29/2008

RPI 1960

Transferência deferida

#25.1

Transferido de: The Perkin-Elmer Corporation

06/27/2000

RPI 1538

Concessão da patente

#16.1

06/29/1993

RPI 1178

Notificação para pagamento de retribuição

#13.1

04/20/1993

RPI 1168

Deferimento

#9.1

12/08/1992

RPI 1149

Republicação - classificação IPC

#15.11

08/11/1992

RPI 1132

Exigência - art. 36 da LPI

#6.1

04/21/1992

RPI 1116

Solicitação de exame técnico

#4.1

09/25/1990

RPI 1034

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